Tone library / Nirvana / Radio friendly unit shifter

Radio friendly unit shifter amp settings — Arsenal Beast Vts-30

The Nirvana guitar tone for “Radio friendly unit shifter”, dialed in for a Arsenal Beast Vts-30 with a Fender Player Stratocaster. Studio version, In Utero (1993) — main heavy riff & feedback chaos

Original rig

Univox Hi-Flier Phase 2 / Fender Mustang -> Boss DS-2 / Tech 21 SansAmp Classic -> EHX PolyChorus -> 1970s Fender Quad Reverb (broken power tube/speaker combo)

Abrasive, noisy, mid-pushed grunge distortion with searing feedback and flanged modulation
Amp settings — Arsenal Beast Vts-30
CHANNELCleanBRIGHToffBOOSToff
GAIN 2 BASS 5 MID 6 TREBLE 5 REVERB 0 MASTER 6
KnobSetting (0–10)
Gain2
Bass5
Mid6
Treble5
Reverb0
Master6
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Guitar
PICKUPbridge TONE8 VOLUME10
Signal chain

01Boss DS-1 Distortion

Primary gain source — run into amp clean channel

Tone 4 · Level 9 · Dist 10

02Electro-Harmonix PolyChorus / Flanger

RECOMMENDED — not currently owned (Kurt's exact notebook setting for the intro feedback & oscillating verse textures)

Feedback 7 · Rate 6 · Width 8 · Tune 10
Why these settings

Because the Arsenal Beast Vts-30 is a non-standard solid-state practice amp with generic tone controls, keep it dialed neutral on the clean channel so the Boss DS-1 acts as the sole gain stage. Single coils on the Player Strat can get shrill with a cranked DS-1, so Tone is dialed back to 4 with guitar tone at 8 to emulate Kurt's thicker Univox humbucker/P90 output. For the intro noise loop and modulated verses, adding an analog flanger or chorus with high feedback will complete the sound.

PRO TIPFor the screeching feedback in the intro and between riff stops, stand close facing your amp with the guitar volume wide open and DS-1 distortion maxed to trigger resonant microphonic feedback.

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These settings are for a Arsenal Beast Vts-30. ToneAdapt matches any song to whatever amp, guitar and pedals you own — first match is free.

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